Answer Happy

Which of the following are TRUE, when describing the Action Potential of a Neuron? Select Any/All that are true. Im A graded potential depolarizes the membrane to a threshold of -50 mv, triggering Voltage-Activated K+ channels to open after a delay. Increasing K+ permeability rapidly At peak depolarization, Voltage-Activated K+ channels open, increasing K+ permeability rapidly repolarizes the membrane. These channels close when the membrane hyperpolarizes. ULI When voltage-activated K+ channels close, the Na/K-ATPase and Leakage channels for both K+ and Nat allow the membrane to continue repolarizing to resting membrane potential. When voltage-activated K+ channels close, the Na/K-ATPase and Leakage channels for both K+ and Na+ return membrane polarization to resting membrane potential. Resting membrane potential is the result of differences in ion concentrations produced by the Na/K-ATPase, and Leakage channels for both K+ and Na+ A short time after opening. Voltage-gated Na+ channels inactivate, and close when the membrane returns to resting membrane potential. A graded potential depolarizes the membrane to a threshold of -50 mv, triggering Voltage-Activated Na+ channels to open. Increasing Na+ permeability rapidly depolarizes the membrane. At peak depolarization, Voltage-gate Na+ channels close, and inactivate when the membrane returns to resting membrane potential. At peak depolarization, Voltage-Activated K+ channels are triggered to open. increasing K+ permeability rapidly repolarizes the membrane. These channels close when the membrane returns to resting membrane potential.